SK4452000A3 - Door closer - Google Patents

Abstract

The invention relates to an improved door closer (1) with an elongated single-piece body (2), which is a compact and aesthetically pleasing unit that can be produced with a minimal amount of material. The side faces (5, 6) of the inventive door closer join in a curved and/or inclined manner, from the lower side (4) to an upper face (3) of the door closer (1), and bearing blocks (11, 12) are formed in a space between their front faces (13, 14), rising from the lower side (4) of said body (2), and the side faces (5, 6).

Description

Technical field

The invention relates to a self-closing door mechanism with a longitudinal, one-piece body forming a compact unit which can be made by minimizing material consumption. The body of the self-closing mechanism consists of a underside and a parallel top surface which are connected to each other by side walls, wherein in the longitudinal direction the body is bounded by two end faces extending on the underside by mounting feet. The side walls of the body are curved and / or angled from the underside to the top surface, and furthermore, on the body there are decorative bearing bosses located between the front surface, whose base is on the underside, and the side surfaces.

BACKGROUND OF THE INVENTION

A similar self-closing door mechanism that has proven in practice due to its reliability and versatility is known as DORMA TS 77. This self-closing door mechanism can be mounted either on the inside or outside of the door, but also on the door frame. However, the positioning of the self-closing mechanism on the inside of the door is in principle problematic, since the door leaf pivots towards the wall when opening and the self-closing mechanism is thus located between the door leaf and the wall. As a result, there is a risk that the self-closing mechanism strikes the wall at a greater opening angle of the door leaf and is damaged, especially when the door is in a corner or is built into a thick-walled wall. In these cases it is usually necessary to use opening angle limiters. For this reason, compact self-closing mechanisms are used with as low a construction height as possible, while retaining the various functions and prior possibilities of versatile use.

The external dimensions, in particular the construction height of the known self-closing door mechanisms, are too large due to the special internal construction, so that a larger amount of material is necessary to produce the self-closing mechanism body itself. The square outer shape of the body of the self-closing door mechanism causes technical problems during its construction due to the formation of a hollow space inside the material and is not optimal in terms of material consumption economy.

SUMMARY OF THE INVENTION

The invention aims to improve the self-closing mechanism of a door so as to make a compact appearance compliant unit which can be manufactured with minimum material consumption and minimum assembly costs.

Due to the compact external shape, the self-closing mechanism of the door according to the invention has the advantage that it can be realized with a lower construction height. Thus, the self-closing mechanism is also suitable for use in constricted or disadvantageous locations with regard to limiting the opening angle of the door leaf. In principle, a self-closing door mechanism whose mechanical and hydraulic units are arranged in its longitudinal direction in the respective channel is the most advantageous.

Although the material consumption for making the body of the door self-closing mechanism according to the invention is extremely low, its stability and all its functional properties are guaranteed. The thickness of all walls is reduced to a minimum. The contours of the external shape are satisfactory in appearance due to smooth and seamless transitions. The body has a longitudinal shape as a result of the functional units arranged in series, the side walls being adapted to the contour of the channel. The curved or skewed side walls are ideal. The smooth running of the outer contours, especially the side walls and the subsequently described bearing bosses, significantly reduces material consumption and reduces casting technology problems.

In order to ensure that the output points of the drive shaft are sufficiently stable, bead-shaped reinforcements are provided on the side surfaces, which are also made with regard to material savings. It is particularly advantageous to attach these so-called bearing bosses to the underside of the body. The drive shaft is arranged in such a way that it is possible to realize the various possibilities of the self-closing door mechanism. For this reason, the shaft is mounted and fixed in the corresponding bore for material saving and easy assembly.

At the same time, the reduction in external dimensions also reduces the amount of packaging material and storage and transport space required. Reducing the volume and weight increases the tightness of the packaging during transport and also reduces the on-site assembly requirements. In addition, the aforementioned properties also result in reduced production costs.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further elucidated by way of example embodiments illustrated in the drawings, wherein:

Fig. 1 is a perspective view of a self-closing door mechanism;

Fig. 2 is a front view of the self-closing mechanism of the door of FIG. 1,

Fig. 3 is a bottom view of the door self-closing mechanism of FIG. 1

Fig. 4 shows a vertical longitudinal section through the door closing mechanism according to FIG. 1

Fig. 5 is a horizontal longitudinal section through the door closing mechanism of FIG. 1

Fig. 6 is a perspective view of a second exemplary embodiment of a self-closing door mechanism;

Fig. 7 is a front view of the door self-closing mechanism of FIG. 6.

Fig. 8 is a perspective view of a third exemplary embodiment of a self-closing door mechanism;

Fig. 9 is a front view of the door self-closing mechanism of FIG. 8th

DETAILED DESCRIPTION OF THE INVENTION

The same or similarly acting components are shown in the drawings with the same reference numerals. In FIG. 1, the self-closing mechanism 1 of the door shown is composed of one piece and is made by casting, for example, of aluminum or steel. In order to optimize material consumption, while achieving sufficient stability, a body not too massive in which all the outer contours and surface transitions are substantially rounded is thus made.

Self-closing mechanisms i. the doors are always adapted to accommodate a mechanical and hydraulic functional unit, which are arranged in a known manner in the longitudinal channel 21 formed in the body 2 in order to reduce the constructional height of the body 2 · The shaft 22 connects the mechanical unit in the body 2 with a rod located outside the body 2 The shaft 22 extends on both sides of the body 2 * and thus it is possible to carry out variable mounting of the self-closing mechanism and the rod on the door leaf and door frame, depending on the conditions. For the sake of clarity, the handle is not shown in the accompanying drawings.

The piston 22 and the closing spring 24 are slidably coupled to each other in the elongated body 2. The shaft 22 is rotatably mounted in the body 2 and has a gear 25 in its middle which engages the gear 26 located inside the piston 22. from the outside coupled with a drawbar not shown here.

When the door is opened, the door leaf rotates with a shaft coupled to the shaft 22. The piston 23 performs horizontal movement and compresses the closing spring 24. The energy accumulated in the closing spring 24 when the door is opened is released simultaneously with the release of the door. In this case, the closing spring 24 is tensioned and pressed against the piston 23 in the opposite direction, which thus performs a linear movement. By converting this linear movement into a rotating movement, the door is closed again. Hydraulic oil is used in the housing 2 as a damping medium.

An axial opening 27 is provided in the body 2 for receiving and securing the shaft 22. The opening 27 has a circular cross-section. The upper part of the bore 27 has a tapered edge 23. In the lower part of the bore 27 there is a sealing ring 30. A shaft 22 is provided with a gear 25 on both sides. On both sides of the gear 25 are rings 21- Both ends of the shaft. 22 are adapted to attach rods. The rod is mounted on one of the ends of the shaft 22, depending on the installation of the self-closing mechanism X itself. sintered bushings 22, 2Z, made of ceramic material. The bearing shell 22, in the form of a tube, has a graduated cross section which terminates at the edge edge 34. The outer surface of the bearing shell 22 is at least partially enlarged radially.

formed groove 29 in symmetrical and in its

The following description a relates to the assembly of the X door self-closing mechanism. The bearing shell 33 forms a pre-fabricated unit into which a sealing ring 55 is inserted first at the edge edge 34 and then, in the direction away from the sealing ring 55 /, a non-detachably sintered bushing is pressed into the bearing shell 52

32. At the top of the bore 27, a sealing ring 55 /, and then a non-detachably fixed sintered sleeve 37, is also mounted first. In the groove 23 located at the bottom of the bore 27, a sealing ring 50 is inserted. The shaft 22 is inserted into the sintered bushing 37 fixed in the upper part of the opening 27 until the ring 31 on the channel 51 bears against it. and the attachment of the shaft 22 is achieved after the bearing shell 33 has been inserted into the lower portion of the bore 27. The preformed bearing shell 33 is passed through the shaft 22. Due to radial enlargement of a certain portion of the outer surface of the bearing shell

33, made for example by a collar, the body 2 surrounding the opening 27 is compressed. When the bearing shell 52 is pushed through the opening 27, the collar formed thereon becomes hooked in the groove 22 due to the springing of the body 2, and the bearing shell 33 is finally fixed in the body 2. Subsequently, the sintered sleeve 52 is threaded through the shaft 22. By the seating of the sintered sleeve 32, the desired position of the shaft 22 in the housing 2 is simultaneously achieved.

The body 2 has a substantially longitudinal shape, with the upper surface 5 facing the underside a. On the underside 4, mounting feet S, 10 are provided in the longitudinal direction, which serve to secure the body 2 to the door or door frame. The bottom side 4 and the top surface 5 are connected to each other by the side surfaces 5/5. The front sides 2, f, which are arranged perpendicular to the bottom side a / side surfaces 5/5 and the top surface 5 / delimit the body 2 in longitudinal direction. The mounting feet 2, 10 protrude in the longitudinal direction of the body 2 over the front walls Z, fi.

The exemplary embodiments of FIG. 1 to 3 show the following differences. The side surfaces 5/5, starting from the underside 4, are curved and terminate on the top surface 2 · The curvature of the side walls 5, & has a parabolic course which is bounded by the top surface 3. · Transition edge between the side walls 5, 5 the top surface 3 is slightly rounded.

The shaft 22 is located centrally between the top surface 3 and the underside 4 and centrally between the two end faces Z ä. This arrangement of the shaft 22 allows various variants of mounting the self-closing mechanism 1, for example its mirror mounting. On both side walls 5 / fi, protruding protrusions 11, 13 are formed from the body 3, which are made in one piece with the housing 3 and are relatively massive in order to ensure a stable bearing of the shaft 33. The protruding protrusions H., 13 have front faces 13 / Trapezoidal 14 and perpendicular to the bottom wall 4 · The wider bases 15, 16 of the 1/13-face front surfaces 13/14 are located on the underside 4 · The trapezoidal cross-section of the bearing blocks 11 12 slightly increases from the front surfaces 13/14 to The bearing blocks 12, 12 are dimensioned so that they do not protrude over the top surface 3 ·

In FIG. 6 and 7, a body 3 (whose side walls 5 / S) is also shown is parabolic. The top surface 3 is slightly arched, thus further material savings are achieved during casting. The transition edges between the side walls 5, 5 are also rounded with a small radius. The bearing blocks 11, 12 have U-shaped front surfaces 13/14, with the open sides 12, 18 on the underside. The U-shaped cross-section of the bearing blocks IX, 13 increases in the direction of the side walls 5, 5.

3. 1Ώ. are betrayed to save material.

In FIG. 8 and 9, a body 3 is shown whose side walls 5, 5 are differently curved. The side wall 5 has, as already described in the exemplary embodiment of FIG. 1 to 3, a parabolic course, and is terminated on the top surface 3. The side wall fi. it exhibits a different parabolic course with respect to the side wall 5, characterized in that the side wall 6 passes directly into the top surface 2 without transition curves. Thus, the top surface 3 is planar on one side and domed on the other.

All three exemplary embodiments have in common that on the underside 4, as shown in FIG. 3, they have openings X2. These openings 52 serve, after casting of the body 2 of the self-closing door mechanism 1, for centering and fixing the workpiece in further working operations. Thus, in particular during machining, inaccuracies can occur when clamping workpieces.

Claims (5)

PATENT CLAIMS A self-closing mechanism (1) with a longitudinal one-piece body (2), - which comprises, with respect to the lower side (4), a parallel upper surface (3), two opposing, lower side (4) and an upper surface (3) connecting the side walls (5, 6) and two longitudinally extending body (2) bounding frontal sides (7, 8), - which comprises on the underside (4) in the longitudinal direction behind the end faces (7, 8) projecting mounting feet (9, 10), and - having bearing bosses (11, 12) formed on both side walls (5, 6) in which a rotatably mounted shaft (22) is attached to a drawbar, characterized in that the side walls (5, 6) starting from the underside (4) and ending on the top surface (3) are curved and / or tapered, and that the bearing bosses (11, 12) are formed between the front surfaces (13, 14) extending from the bottom (4) and the side walls 15, 6). The self-closing door mechanism (1) according to claim 1, characterized in that the side walls (5, 6) have a different inclined and / or curved course. The self-closing door mechanism (1) according to claim 1 or 2, characterized in that the side walls (5, 6) have a parabolic course. The self-closing door mechanism (1) according to any one of claims 1 to 3, characterized in that the top surface (3) is at least partially domed. The self-closing door mechanism (1) according to one of claims 1 to 4, characterized in that the bearing bosses (11, 12) have a shape corresponding to the front surfaces (13, 14).